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Chemistry · 2026 · 2 marks
CBSE 2026 · Region 5 · Set 1 · Q21
(a) Write any two fat soluble vitamins. (b) How will you confirm the presence of five - OH groups in a glucose molecule, which are attached to…
(a)
Write any two fat soluble vitamins.
(b)
How will you confirm the presence of five - OH groups in a glucose molecule, which are attached to different carbon atoms ?
Marking-scheme solution
(a)
Vitamin A,D, E, K .
(b)
Acetylation of glucose with acetic anhydride gives stable glucose pentaacetate
which confirms the presence of five –OH groups /
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CBSE Class 12 Chemistry past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.